Ключевые слова: aerial, animal, avian, background, beak, beautiful, beauty, bird, birding, cute, delichon, dove, environment, fauna, feather, flight, flying, hirundinidae, icon, insectivorous, life, male, martin, migrant, migratory, natural, nature, nest, one, passerida, passerine, petrochelidon, season, silhouette, sky, spring, summer, swallow, swallows, symbol, tail, tropical, urbicum, vertebrate, wild, wilderness, wildlife, wing, wings, young,